It's a bit different with the MSI, the two closest to the CPU, 1 and 2, are dual-channel. Looking at the 2nd pic, you can see I have a stick in the green and the purple for dual-channel. This setup is different from say DFI since the dual-channel slots are next to each other.

Excellent selection of parts! I don't know why so many ppl game with Intel, AMD is clearly superior. Glad to see you did not make the same mistake. Great PSU choice, CPU cooler choice, memory, GFX card and cooler and case of course! That last pic is really nice!! 9/10